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Ballentine's Law Dictionary · James A. Ballentine · 1916
Ballentine's Law Dictionary
In United States postal laws, a written communication of four or more sheets.
See 21 Ann. Cas. (U. S.) 699, 177 Fed. 352, 35 L. R. A. (N. S.) 1034, 101 C. C. A. 328.